Adjusting for inflation which is worth more 1908 pennies 1960 pennies 1990 pennies 2006 pennies 2007 pennies or any penny melted down and sold as scrap metal?

The copper in a US cent made before 1982 is worth almost 2 cents. Those made after 1982 are worth much less than 1 cent (but the cost of producing them is about 1.5 cents). Both types were made in 1982. But before you start sorting your pre- and post 1982 pennies, you should know that there is an administrative order prohibiting the "melting or exporting of large numbers of one and 5 cent coins" which could result in a fairly large fine.